Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
1400133moderately pollutedexcellent11excellent
130091lightly pollutedexcellent11excellent
120091lightly pollutedexcellent21excellent
110051goodexcellent11excellent
100054goodexcellent11excellent
090049goodexcellent21excellent
080038goodexcellent41excellent
070013excellentexcellent31excellent
060032goodexcellent31excellent
050016excellentexcellent21excellent
040022goodexcellent31excellent
030020excellentexcellent21excellent
020021goodexcellent21excellent
010014excellentexcellent21excellent
000011excellentexcellent11excellent
230010excellentexcellent11excellent
220011excellentexcellent11excellent
21007excellentexcellent11excellent
20004excellentexcellent11excellent
19004excellentexcellent11excellent
180076lightly pollutedexcellent11excellent
170081lightly pollutedexcellent11excellent
1600131moderately pollutedexcellent11excellent
1500126moderately pollutedexcellent11excellent